<div>我是父组件</div>
<div>
  <input type="text" placeholder="请输入" [(ngModel)]="stock">
  <app-order [stockCode]="stock" [amount]="100"></app-order>
</div>
<hr>
<app-price-quote (priceChange)="priceQuoteHandler($event)"></app-price-quote>
<div>
  这是报价组件外部，股票代码是{{priceQuote.stockCode}}。
  股票价格是{{priceQuote.lastPrice | number:'2.2-2'}}
</div>
<hr>
<app-price-quote (buy)="buyHandler($event)"></app-price-quote>
<app-order1 [priceQuoteOrder]="priceQuoteOrder"></app-order1>

